There are new viruses coming up every day, and hackers mostly use such viruses and exploits to crack your server. If you have a linux box, you are most probably using CalmAV. Your server’s protection becomes outdated at the very moment a new virus is released. So it is very much important to schedule a corn job daily to update your virus databases. When CalmAV virus database is outdated it will show following message.
LibClamAV Warning: ************************************************** LibClamAV Warning: *** The virus database is older than 7 days! *** LibClamAV Warning: *** Please update it as soon as possible. *** LibClamAV Warning: **************************************************
If you receive a message the one given above, run following command to update ClamAV Virus database.
freshclam